4″ Boat Trailer Keel Bow Roller – 100mm Long, 76mm Wide, 18mm Bore, Heavy Duty Rubber (SKU: IDD-KEELROLLER4)

4″ Keel / Bow Roller – Heavy Duty Black Rubber

The IDD-KEELROLLER4 is a compact 4-inch cotton reel style roller crafted from durable black rubber. It provides reliable bow or keel support for smaller boat trailers, especially useful near the trailer winch post or on narrow crossbars.

With a 100mm length, 76mm width, and 18mm bore (suited to 16mm spindles), this roller fits easily into standard bracket systems and resists UV damage for long-term outdoor use.

Product Specifications

Why Choose This Roller?

• Great for tight spaces or small trailers
• Simple cotton reel design for universal fit
• UV-stable and non-marking rubber
• Compatible with standard brackets

Big performance in a small package — this 4-inch roller gets the job done where space is tight.

Frequently Asked Questions (FAQ)

• Q: Will it fit a 16mm shaft?
  A: Yes, the 18mm bore is made to suit 16mm spindles with a standard fit.
• Q: Is it good for bow support?
  A: Absolutely — this roller works well at the bow or front-end of the keel where compact size matters.
• Q: Does it resist UV damage?
  A: Yes – the rubber is UV-stable and designed for long-term exposure to sun and saltwater.

Usage Guide

1. Slide the roller onto a 16mm shaft using the 18mm bore.
2. Position at the bow post or front keel section of your trailer.
3. Secure using washers or brackets to prevent shifting.
4. Rinse with fresh water after each use to prolong life.

Evaluation & Recommendation

This is a lightweight, durable roller ideal for smaller boats or use as a bow cradle. Its compact design allows installation in tight spaces without sacrificing protection or strength.

Ideal for lightweight trailers, front bow support, or as a backup roller where space is limited.